If a quorum exists, action on a matter by a voting group is approved if the votes cast within the voting group favoring the action exceed the votes cast opposing the action, unless the charter, bylaws or chapters 51-68 of this title require a greater number of affirmative votes.
Voting requirements
Tenn. Code Ann. § 48-57-204, under Voting.
Tenn. Code Ann. § 48-57-204